[This is the beginning]
Many years later, facing the raging fire of the burning mountain, Zuo Yunqi will recall that distant afternoon when his father took him to watch the time traveler.
[This is flashback]
On that day, all the people in the city called their friends and waited on tiptoes stretching their necks by the roadside, watching the crosser ride his horse across the bridge.
The traverser is dressed in a brand-new crimson robe proud of the spring breeze, with two rows of followers. It is said—according to the old man who played chess at the end of the alley—that he was a prefect who took office immediately.
"Prefect!" Zuo Yunqi said to his father, "Why?"
The uncle said: "It seems to be because I have learned how to grow hybrid rice."
Zuo Yunqi's father snorted coldly and said: "If any other kind dares to become an official, this world will come to an end sooner or later."
[Zuo Yunqi]
Zuo Yunqi was still a chubby kid that year, holding his father's clothes and squeezing in the crowd.
Zuo Yunqi looked at the prefect from a distance, with two eyes and one mouth, there was no difference. . He didn't understand why everyone's faces were filled with unreasonable contempt and fear.
Those strange people who flew here from thousands of years later, whoever the emperor finds a little useful, will all be promoted to heaven.
Within a few months, new news came.
The new prefect was beheaded in half in public, and his viscera were spilled all over the floor.
It is said—according to the frothy storyteller—that the reason was that he invited someone to write a book about the social structure and system after a thousand years, and it was done by the higher-ups in the name of disturbing the hearts of the people.
Zuo Yunqi's father snorted coldly and said: "I can't even tolerate a different kind, this world will end sooner or later."
[Forbidden book]
"...Therefore, we can make two inferences about time-travelers:
"First, even if one hundred wastes that can't even make bicycles come through, it doesn't mean that the one hundred and first one won't make nuclear weapons.
"This is because, in ordinary time and space (that is, there is no time axis retrograde and jump), the gap in human knowledge will inevitably continue to widen. Ordinary people are absolutely unable to understand or reproduce the latest technology at the tip of the pyramid; in other words, we cannot rely on their performance. Infer the highest level of the same period.
"Secondly, people after 3,000 years and people after 3,005 years are likely to be as different as little white rabbits and Tyrannosaurus rex.
"This is because, in ordinary time and space, the advancement of cutting-edge technology is constantly accelerating, especially before and after major changes such as the birth of the Internet, human beings will leapfrog the terrifying progress that previously took a hundred years to achieve within five years, and their Worldviews and behavioral patterns will also be vastly different.
"Our world has not been destroyed, simply because what has come through so far is the common waste of the early twenty-first century.
"Once any of the two conditions of 'early 21st century' and 'ordinary waste' are broken, the world is likely to collapse and even be destroyed."
— Sun Taishou "The Coming of the Future"